1120001004 has 108 divisors (see below), whose sum is σ = 3046026984. Its totient is φ = 346871808.

The previous prime is 1120000991. The next prime is 1120001033. The reversal of 1120001004 is 4001000211.

It is a happy number.

It is a super-2 number, since 2×1120001004² = 2508804497922016032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 862884 + ... + 864180.

Almost surely, 2^1120001004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1120001004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1523013492).

1120001004 is an abundant number, since it is smaller than the sum of its proper divisors (1926025980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1120001004 is a wasteful number, since it uses less digits than its factorization.

1120001004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424 (or 1402 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1120001004 is about 33466.4160614787. The cubic root of 1120001004 is about 1038.4991306835.

Adding to 1120001004 its reverse (4001000211), we get a palindrome (5121001215).

The spelling of 1120001004 in words is "one billion, one hundred twenty million, one thousand, four".